The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2024
Filed:
Jan. 13, 2021
Applicant:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Inventors:
Shinji Ohta, Shizuoka, JP;
Susumu Ogo, Shizuoka, JP;
Assignee:
KOITO MANUFACTURING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 47/155 (2020.01); B60Q 1/38 (2006.01); B60Q 1/40 (2006.01); H05B 45/37 (2020.01); H05B 45/48 (2020.01);
U.S. Cl.
CPC ...
B60Q 1/381 (2022.05); B60Q 1/40 (2013.01); H05B 47/155 (2020.01);
Abstract
A linear regulator supplies a first drive current to a first light source in a first period in which the first light source is turned on and a second light source is not turned on, and in a second period in which the first light source and the second light source are turned on, and stops the supply of the first drive current in a third period in which the first light source and the second light source are turned off. A switching regulator supplies a second drive current to the second light source in the second period, and stops the supply of the second drive current in the third period.